![MCP19111-E/MQ Allicdata Electronics](https://files.allicdata.com/upload/common/default.jpg)
Allicdata Part #: | MCP19111-E/MQ-ND |
Manufacturer Part#: |
MCP19111-E/MQ |
Price: | $ 2.77 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Microchip Technology |
Short Description: | IC REG CTRLR BUCK PMBUS 28QFN |
More Detail: | Buck Regulator Positive Output Step-Down I²C, PMBu... |
DataSheet: | ![]() |
Quantity: | 16 |
1 +: | $ 2.52000 |
25 +: | $ 2.10244 |
100 +: | $ 1.90777 |
Frequency - Switching: | 100kHz ~ 1.6MHz |
Base Part Number: | MCP19111 |
Supplier Device Package: | 28-QFN (5x5) |
Package / Case: | 28-VFQFN Exposed Pad |
Operating Temperature: | -40°C ~ 125°C (TJ) |
Control Features: | Phase Control |
Serial Interfaces: | I²C, PMBus, SMBus |
Clock Sync: | No |
Synchronous Rectifier: | Yes |
Duty Cycle (Max): | -- |
Series: | Automotive, AEC-Q100 |
Voltage - Supply (Vcc/Vdd): | 4.5 V ~ 32 V |
Output Phases: | 1 |
Number of Outputs: | 1 |
Topology: | Buck |
Output Configuration: | Positive |
Function: | Step-Down |
Output Type: | Transistor Driver |
Part Status: | Active |
Packaging: | Tube |
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The MCP19111-E/MQ is a fully integrated economy-grade pulse width modulation (PWM) controller designed for non-isolated buck topologies. It is a DC-to-DC switching controller IC known to be effective atincreasing efficiency and reducing size, noise and component count. This makes the MCP19111-E/MQ an ideal option for space-constrained, low power, and low voltage applications such as LED lighting and battery-operated products.
The application field of MCP19111-E/MQ covers systems requiring output voltages of up to 60V and a peak current of up to 14A. Because of its unique combination of features, it can also be used for demanding applications such as solar power applications and battery charging requirements. Being a switch controller, it does not itself switch, but instead it can drive a power switch (MOSFET, BJT, etc.) needs to be connected externally.
Working Principle
Working on the pulse width modulation (PWM) technique, the digital control algorithm of MCP19111-E/MQ can support high efficiency, system flexibility, and low component count. In PWM, the digital signal is switched at a constant frequency and this specific frequency helps in obtaining predetermined current levels. The job of a voltage regulator is to keep the output voltage steady irrespective of the changes in load, voltage variations and heat dissipation.
The pulse width modulator within the MCP19111-E/MQ consists of a voltage reference, a comparator and a timing circuit. The feedback network delivers the output voltage sensed at the output to the inverting input of the comparator and the voltage reference is connected to its non-inverting input. The timing circuit in the MCP19111-E/MQ works on an internal oscillator which then sets the PWM frequency. In case a power switch is in position, the PWM signal will drive it.
Additionally, The MCP19111-E/MQ offers an extensive variety of programmable features that facilitate the optimization of all kinds of power conversion systems. This includes operation in discontinuous-conduction mode (DCM), programmable dead time, programmable switching frequency, and automatic pre-bias start. Part of its flexibility attributes are also configurable pre-bias start-up current limitation, over-current protection and over-voltage protection as well as thermal shutdown.
To sum it up, the MCP19111-E/MQ is an ideal choice for applications requiring low component count and high efficiency. Equipped with various protection and enhanced reliability, it has proved to be an excellent DC-to-DC switching controller IC.
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